package com.itheima.service;


import com.itheima.pojo.Member;

import java.util.ArrayList;
import java.util.List;

public interface MemberService {
    public  Member findByTelephone(String telephone);

    void add(Member member);
    //查过去一年会员数量
    List<Integer> findMemberCountByMonths(ArrayList<String> monthlist);
}
